%I A132847
%S A132847 1,2,9,42,270,1785,13657,108606,943677,8534290,82099523,819569205,
%T A132847 8575756709,92782439316,1042810799150,12077608219410,144446181373140,
%U A132847 1774918640030754,22425992057948620,290381947113460848
%N A132847 Column 1 of triangle A132845.
%F A132847 a(n) = A132844(2n+1,1) = A132844(2n+2,1).
%o A132847 (PARI)
%Y A132847 Cf. triangles: A132845, A132844; other columns: A132846, A132848, A132849.
%Y A132847 Sequence in context: A056845 A162273 A092239 this_sequence A121365 A018960 
               A002310
%Y A132847 Adjacent sequences: A132844 A132845 A132846 this_sequence A132848 A132849 
               A132850
%K A132847 nonn
%O A132847 0,2
%A A132847 Paul D. Hanna (pauldhanna(AT)juno.com), Sep 17 2007